<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>将数字转化成百分⽐格式</title>
</head>
<body>
    
</body>
</html>
<script>
    var arr = prompt('请输入数字');
    var Arr = Number(arr*100)+'%';
    alert(Arr);
</script>